#include<iostream>
using namespace std;
int main(){
    short m1 = 31;
    short m2 = 0;
    short m3 = 31;
    short m4 = 30;
    short m5 = 31;
    short m6 = 30;
    short m7 = 31;
    short m8 = 31;
    short m9 = 30;
    short m10 = 31;
    short m11 = 30;
    short m12 = 31;
    short m = 0;
    short y = 0;
    cin>>y>>m;
    if(y % 400 == 0 || (y %4 == 0) && (y % 100 != 0))
    {
        m2 = 29;
    }
    else
    {
        m2 = 28;
    }
    switch(m)
    {
        case 1:
        cout<<m1<<endl;
        case 2:
        cout<<m2<<endl;
        case 3:
        cout<<m3<<endl;
        case 4:
        cout<<m4<<endl;
        case 5:
        cout<<m5<<endl;
        case 6:
        cout<<m6<<endl;
        case 7:
        cout<<m7<<endl;
        case 8:
        cout<<m1<<endl;
        case 9:
        cout<<m1<<endl;
        case 10:
        cout<<m1<<endl;
        case 11:
        cout<<m1<<endl;
        default:
        cout<<m12<<endl;
    }
    
    system("pause");
    return 0;
}